JP2813336B2 - Retrofit pad for wireless telephone and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pad to be used as a retrofit on a wireless telephone such as a portable telephone, and a method for manufacturing the pad.

[0002]

2. Description of the Related Art In recent years, various types of covers and cases made of synthetic leather, vinyl material, or the like so as to enclose the entire telephone have been marketed as accessories for wireless telephones such as portable telephones and PHSs. Is coming. In recent years, this type of cover, case, etc. is made of a material that is excellent in shock absorption to prevent the failure or damage of the radiotelephone at the time of falling, etc. Those equipped with a shield material are being developed.

[0003]

Since the radio telephone differs in the arrangement, the shape, the size, etc. of the operation keys, the liquid crystal display, etc., including the external shape and size depending on the model, the cover and the case are common. Cannot be transformed. Therefore, there are problems related to cost and labor at the stage of manufacturing and distribution, and there are many problems also from the point of view of buyers in that selection of items is restricted.

[0004] Further, such a cover or case is not only troublesome to attach and detach to and from the wireless telephone, but also bulky in a state where it is removed, so that it is frequently changed according to the mood. Was unsuitable. Further, the radiotelephone equipped with a cover, a case, or the like may have a feeling of being held in a hand, and thus the volume may be increased.

[0005] Covers and cases are formed with holes for facilitating the passage of sound to portions corresponding to the receiver and transmitter of the radiotelephone. The wireless telephones are also both colored dark.
For this reason, the location of the receiving unit or the transmitting unit of the wireless telephone may be difficult to understand when the cover or the case is attached.

The present invention has been made in view of the above circumstances, and has a function of shielding an electromagnetic wave of a predetermined frequency emitted from a wireless telephone, and preferably has a function of absorbing shock. Unlike conventional covers and cases, it is an object of the present invention to enable common use for various wireless telephones and easy attachment / detachment to the wireless telephones.

Another object of the present invention is to provide a retrofit pad for a radio telephone and a method for manufacturing the same, which can eliminate the difficulty of holding, the weight burden, and the unknown location of the receiver and the transmitter when mounted on the radio telephone. The purpose is to:

[0008]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, the retrofitting pad of the wireless telephone according to the present invention is characterized in that an attaching member that enables attachment to the front surface of the wireless telephone is provided on the back surface of the pad body having electromagnetic wave shielding characteristics.

That is, the pad can be attached to the wireless telephone by the sticking member. Therefore, unlike a conventional cover, case, or the like, it is not necessary to wrap the entire wireless telephone, and the wireless telephone can be formed in a minimum size and shape. Therefore, it is possible to achieve commonality for various types of wireless telephones, and it is possible to easily cope with changing clothes. Further, there is no possibility that the user may feel difficulty in holding the wireless telephone and heavy load.

[0010] The shape and size of the pad may be, for example, the shape of the pad body such that it corresponds to only the receiving section of the wireless telephone, or the upper pad body corresponding to the receiving section and the lower pad body corresponding to the transmitting section. Or formed separately. In the end, by doing so, the outer shape and size of the wireless telephone, the arrangement, shape, size, etc. of the operation keys and the liquid crystal display unit do not affect whether the pad according to the present invention can be mounted. It is.

However, in addition to such a shape, for example, in the case of a wireless telephone having no liquid crystal display unit, the wireless telephone may be adapted to correspond to the entire surface from the receiving unit to the transmitting unit. The pad body of the pad may be in the form of a sheet or a thin plate made of a resin material kneaded with an electromagnetic shielding material in the form of powder or the like. To some extent, a well-equipped production line is required. Therefore,
Not limited to the powder form, for example, a magnetic shield sheet in which an electromagnetic wave shielding material such as a fiber form is dispersed and held in a planar shape is formed in advance, and an exterior material formed by an appropriate method is separately provided on the surface side of the magnetic shield sheet. Therefore, it is preferable to adopt a method of forming the pad body.

In this case, it is preferable to provide an opening in the exterior material in correspondence with a sound hole provided in a receiving section or a transmitting section of the wireless telephone. By doing so, the receiving section can obtain a loudspeaker effect, and the transmitting section can obtain a sound collecting effect. There is an advantage that it can be easily reached.

[0013] The magnetic shield sheet may be formed in a small sheet piece so as to correspond only to the sound hole of the wireless telephone, or may be formed in a sheet shape having the same size as the entire exterior material. In addition, it is preferable to select a material having not only excellent electromagnetic wave shielding properties but also sound transmission properties for the magnetic shield sheet. It is preferable that an elastic layer formed of a shock absorbing material be provided on the exterior material, since this also leads to protection of the wireless telephone. Of course, when this elastic layer is provided, how large its size is, and whether it is located on the surface layer side, the middle layer portion, or the back layer side in the exterior material, etc., can be arbitrarily changed. .

If an adhesive that can be repeatedly adhered is used as a sticking member provided on the back surface of the pad body, the attachment and detachment of the pad to and from the wireless telephone can be repeated many times. Therefore, it is possible to easily reattach the pad for correcting the positional deviation of the pad with respect to the wireless telephone, change the clothes with a pad of a different color, or remove the pad when cleaning or replacing the wireless telephone.

When the pad body is formed separately from the upper pad body and the lower pad body, the lower pad body may be provided with an operation surface cover extending toward the operation panel of the wireless telephone. In this way, there is an advantage that the electromagnetic wave leaking from the edge of the operation key in the wireless telephone can be shielded by the pad as much as possible.

In this operation surface cover portion, the portion corresponding to the operation keys provided on the operation panel portion may be made thinner or transparent. However, there is a possibility that this may be troublesome and may lead to an increase in cost. Therefore, it is preferable to form a penetrating key hole at a position corresponding to the operation key. On the other hand, in the method for manufacturing a retrofit pad of a wireless telephone according to the present invention, an opening corresponding to a sound hole of the wireless telephone is formed in a material sheet for an exterior material having a surface subjected to a decoration process and a lamination process. An exterior material is formed, and a magnetic shield sheet and an adhesive sheet having excellent electromagnetic wave shielding properties and sound transmission properties are arranged on the back side of the opening in the exterior material, and the whole is punched into a predetermined shape by high frequency welding and simultaneously punched. The feature is that the outline is fixed.

According to such a procedure, the manufacture of the pad becomes easy. Also, when performing high-frequency welding, welding can be performed at the same time as cutting, leading to a reduction in labor,
Further, as compared with the case where welding and cutting are performed separately, there is an advantage that mutual positional deviation can be prevented. Further, there is also an advantage that the cut edge is rounded by welding and is finished neatly.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of a pad 1 according to the present invention. This pad 1
The sticking member 3 is provided on the back surface of the thin plate-shaped pad main body 2, and the sticking member 3 allows the wireless telephone 5 to be retrofitted to the earpiece 6 or the like.

The pad main body 2 is formed in a rectangular plate having a necessary and sufficient size to cover the receiver 6 of the radio telephone 5 and has a lateral groove-shaped loudspeaker in the center of the plate surface. 7 are provided. The loudspeaker 7 is positioned so as to correspond to the sound hole 9 provided in the receiver 6, and facilitates the passage of sound from the speaker 10 to the outside.

The pad body 2 has an exterior material 12 and a magnetic shield sheet 13, and the exterior material 12 further has a cover sheet 14 and an elastic layer 15. The loudspeaker 7
An opening 17 formed to penetrate the exterior material 12,
It is formed of a portion of the magnetic shield sheet 13 that closes the opening 17. In the exterior material 12,
The cover sheet 14 is formed of synthetic leather, a resin sheet, leather, cloth, or the like, and seals the elastic layer 15 by sandwiching the elastic layer 15 from the front side and the back side.

In the first embodiment, polyvinyl chloride having no water absorption is used as the cover sheet 14. for that reason,
It was suitable in that it did not absorb sweat, oil, moisture, etc., did not leave any odor, and could easily wipe off dirt. In addition, there was no uncomfortable feeling in the touch, which was suitable. The elastic layer 15 is made of urethane, sponge, foam resin,
It is formed of a soft rubber or resin such as a silicon-based material or a material obtained by raising a fiber material such as cotton.

In the first embodiment, as the elastic layer 15, a shock absorbing material made of a low-repulsion acrylic continuous foam or a low-repulsion high-density urethane is used. Therefore, it is suitable for the protection of the wireless telephone 5 and has an advantage that the pad body 2 is excellent in shape retention. In addition, in the low resilience acrylic continuous foam, 4/8 steel balls based on JIS K6401 are used.
As a result of a drop test from a height of 60 mm, a rebound resilience of 0.2 was obtained.
The results are extremely good compared to the rebound resilience of the sheet of 21.0. Further, the rebound resilience of the urethane sheet was 4.2.
8, which is also preferable.

The magnetic shield sheet 13 is formed of a material having a characteristic of transmitting sound but shielding electromagnetic waves of a predetermined frequency. This material is obtained by holding a powdery or fibrous electromagnetic shielding material in a planar state with respect to a sheet material serving as a base. The degree of dispersion, that is, the density of the electromagnetic wave shielding material balances sound permeability and electromagnetic wave shielding action.

The anti-magnetic sheet 13 can be formed, for example, by applying an antistatic agent represented by "Soldion" (trade name, manufactured by Toray Industries, Ltd.) to the surface of the nylon cloth. FIG. 4 is a graph showing the electromagnetic wave shielding effect of “Soldion”. The numerical value in parentheses added to the shielding effect on the vertical axis in FIG. 4 indicates the shielding ratio.

The adhesive member 3 provided on the back surface of the pad body 2 is made of an adhesive which can be repeatedly adhered. Examples of the adhesive include a rubber-based adhesive such as urethane rubber, silicone rubber, and acrylic rubber. Such a sticking member 3 is convenient for correcting the displacement of the mounting position with respect to the wireless telephone 5 and changing the dressing, etc.
If dirt or the like adheres to the adhesive surface, it is very convenient because it can exhibit the original adhesive force only by washing with water and drying. Of course, the adhesive does not remain on the wireless telephone 5 when peeled off from the wireless telephone 5.

The sticking member 3 may be formed by directly applying the above-mentioned adhesive to the back surface of the pad body 2. Alternatively, the above-mentioned adhesive may be applied to one or both surfaces of the material sheet and then applied in advance. It is also possible to adopt a method of forming as the attachment sheet 18 (see FIG. 2), and stick this to the back surface of the pad body 2. In the case of a double-sided tape type, a normal adhesive having no repeated adhesive may be used as the adhesive on the side facing the back surface of the pad body 2.

In the first embodiment, as the adhesive,
Toray's trade name "Tretie" was used. This pressure-sensitive adhesive is a urethane rubber-based pressure-sensitive adhesive. In order to manufacture the pad 1 having such a configuration, as shown in FIG. 2, the front and back sides of the shock absorbing material for forming the elastic layer 15 are covered with the cover sheet 1.
4 and high frequency welding of these outer peripheral parts to obtain an integrated plate-shaped body 19. At this stage, it is preferable that at least the cover sheet 14 used on the front side is subjected to decoration processing such as printing, coloring, embossing, or lamination processing.

Simultaneously with or after the formation of the plate-like body 19, an opening 17 penetrating in the form of a horizontal groove is formed at the center of the plate surface of the plate-like body 19 by high frequency welding. By doing so, the outer peripheral portion of the plate-shaped body 19 and the inner peripheral portion of the opening 17 are formed together with welding, and the exterior material 12 is formed.
Next, a magnetic shield sheet 13 is attached to the back surface of the exterior material 12. This attachment may be performed using an appropriate adhesive or using a double-sided tape. When a double-sided tape is used, it is preferable that a hole corresponding to the opening 17 is formed in the double-sided tape. Therefore, before the step of forming the opening 17 in the plate-like body 19, a double-sided tape may be applied to the back cover sheet 14 in advance.

After the magnetic shield sheet 13 is attached to the back surface of the exterior material 12 in this manner, an adhesive sheet 18 to be the adhesive member 3 is further disposed on the back surface of the magnetic shield sheet 13. The pad 1 is completed by finally forming the entire outer periphery of the exterior material 12 and the adhesive sheet 18 into a finished shape by high-frequency welding or the like. FIGS. 5 to 7 show a pad 1 according to a second embodiment of the present invention. In the pad 1 according to the second embodiment, the pad main body 2 has an upper portion corresponding to the earpiece 6 of the wireless telephone 5. The pad main body 20 and the lower pad main body 22 corresponding to the transmitting section 21 are separately formed.
The point that the adhesive member 3 is provided on each back surface of the upper pad main body 20 and the lower pad main body 22 is the same as that of the first embodiment.

The upper pad body 20 is formed in such a size that the upper pad body 20 substantially covers the upper surface of the wireless telephone 5 within a range that does not reach the liquid crystal display section 24 provided below the receiver 6. ing. A plurality of loudspeakers 7 having a round hole shape are provided at substantially the center of the plate surface of the upper pad body 20. These loudspeakers 7 are provided with sound holes 9 provided in the receiver 6.
It is positioned to correspond to.

Further, the lower pad main body 22 is
Operation panel unit 2 provided above transmission unit 21
5 has an operation surface cover portion 26 extending toward it. Therefore, as a whole, the lower pad body 22 substantially covers the lower half surface of the wireless telephone 5 within a range that does not reach the liquid crystal display unit 24 and some screen operation keys 28 arranged below the liquid crystal display unit 24. It is formed in such a size.

The lower pad main body 22 is provided with an elliptical sound collecting section 29. The sound collecting section 29 is positioned so as to correspond to the sound hole 9 provided in the transmitting section 21. Also, the operation surface cover 2 of the lower pad body 22
6, a key hole 31 corresponding to the operation key 30 provided on the operation panel unit 25 of the wireless telephone 5 is formed.

In the pad 1 of the second embodiment, the upper pad body 20 and the lower pad body 22 are
2 and a magnetic shield sheet 13, and the exterior material 12 is formed by a material sheet 37 in which a decoration processing section 35 and a lamination processing section 36 are provided on the surface of the elastic layer 15. In the second embodiment, the elastic layer 15
, A foamed sheet, artificial leather, synthetic leather, or the like was used. With this, it is possible to express a thickness and a sense of quality that cannot be obtained with a cutting sheet or the like. In addition, the function of the pad 1 itself and the wireless telephone 5 as a protective material can be expected by having the thickness.

In the second embodiment, the elastic layer 1
In the process of manufacturing No. 5, a powdery electromagnetic wave shielding material was mixed in the raw material. This electromagnetic wave shielding material may be the same as that used for forming the magnetic shield sheet 13, but it is not necessary to impart sound permeability, so there is no restriction on the material and mixing amount. Printing, coloring, embossing, or the like can be employed for the decoration processing unit 35. Therefore, it is possible to adopt various designs, colors, and the like that cannot be expressed by conventional covers and cases.

In the second embodiment, solid printing by silk screen is adopted, and the surface of the wireless telephone 5 is colored in a similar color (matte is dark gray). Lamination process 36
Is made of a thin vinyl chloride sheet adhered to the surface of the elastic layer 15 and prevents the oil of the face of a person from seeping into the elastic layer 15 made of synthetic leather or the like to cause stains.

Note that the same magnetic shielding sheet 13 and sticking member 3 as in the first embodiment can be used. In the second embodiment, a material having a metallic luster such as silver or gold on both sides can be used for the magnetic shield sheet 13. In this case, the magnetic shield sheet 13
Is attached to the back side of the exterior material 12, the inner bottom of the opening 17 of the exterior material 12 is reflected with metallic luster as if it were made of metal.

The pad 1 of the second embodiment having such a configuration
In order to manufacture the elastic layer 15, first, as shown in FIG.
The decorative sheet processing section 35 and the laminating section 36 are provided on the surface of the foam sheet to be used, and the material sheet 37 is obtained. The material sheet 37 has a size corresponding to the upper pad main body 20 and the lower pad main body 22, and the shape and arrangement of each can be clarified by the decoration processing unit 35.

Then, a die 40 is put on the upper part of the material sheet 37. The squeeze mold 40 is for forming an opening 17 corresponding to the sound hole 9 of the receiver 6 and the transmitter 21 of the wireless telephone 5. Then, a hole is formed by high-frequency welding from above the mold 40,
The exterior material 12 is obtained. On the other hand, the adhesive sheet 18 to be the adhesive member 3 prepared in advance is covered with a die 41 substantially the same as the die 40, and a hole is formed by high-frequency welding. An opening 17 is formed corresponding to each sound hole 9.

Next, a magnetic shielding sheet 13 is provided on the back surface of the exterior material 12.
Are arranged, and the adhesive sheet 18 is arranged on the back surface of the magnetic shield sheet 13. Then, from above, Nuki type 42
Put on. The cutout type 42 is for forming a key hole 31 corresponding to each operation key 30 of the operation panel unit 25 of the wireless telephone 5 and cutting out the outer shape of the upper pad main body 20 and the lower pad main body 22. is there.

Then, punching into a predetermined shape and fixing of the punching contour are performed from above the die 42 by high frequency welding. In FIG. 7, the positions of the triangular marks facing up and down correspond to the cutting positions. As described above, the method of simultaneously performing the punching (cutting) into the predetermined shape and the fixing (welding) of the punching contour has an advantage that mutual positional deviation can be prevented as compared with the case where these are performed separately. Also, punching by high frequency welding method makes the cutting edge rounded,
For example, there is an advantage that the touch is good in the inner peripheral portion of the key hole 31 and the like, and the key operation becomes easy.

Thus, the pad 1 separated into the upper pad body 20 and the lower pad body 22 is obtained. FIG.
FIG. 9 shows a third embodiment of the pad 1 according to the present invention,
In the third embodiment, the magnetic shield sheet 13 and the attaching member 3
The stacking relationship with the adhesive sheet 18 to be used is opposite to that of the second embodiment. Others are exactly the same as the second embodiment.

FIG. 9 shows a fourth embodiment of the pad 1 according to the present invention. In this fourth embodiment, a magnetic-shield sheet 13 and an adhesive sheet 18 to be the adhesive member 3 are laminated. The adhesive sheet 1 is not provided around the magnetic shield sheet 13.
8 are arranged on the same plane. Others are exactly the same as the second embodiment. By the way, the present invention is not limited to the above embodiments.

For example, the laminated structure and the material used as the exterior material 12 are not limited at all, and the number of laminated layers may be larger than that illustrated in each embodiment or may be reduced. Further, only one layer may be used, or in an extreme case, the exterior material 12 itself may be omitted. The pad 1 of the present invention can be applied not only to a mobile phone and a PHS but also to a cordless phone and a transceiver.

[0044]

EXAMPLE In the pad 1 of the first embodiment, the outer dimensions of the pad body 2 were set to 20 mm × 30 mm, the total thickness was about 3 mm, and the width of the opening 17 was 1. A product having a length of 5 mm and a length of 14 mm was manufactured. Then, when the wireless telephone 5 is attached to the receiver 6 of the wireless telephone 5 and when it is not attached, the wireless telephone 5
The electric field intensity was measured by an electromagnetic wave measuring instrument installed at a distance of 5 mm from the.

The wireless telephone 5 has an MA8 made by Matsushita Electric
A 41-type mobile phone was used. In addition, electromagnetic wave measuring instruments
Advantest Spectrum Analyzer T541
A was used. The set values were SPAN: 1 MHz, resolution bandwidth: 10 kHz, video bandwidth: 10 kHz, and detection function: poor value. The measurement point is the sound hole 9 of the receiver 6 of the wireless telephone 5, and the measurement frequency band is 9
46.364 MHz. The ambient temperature during the test was 26
The temperature and humidity were 65%.

As a result of the measurement, the measured value A when the pad 1 was not mounted was 59.9 dBμV, whereas the measured value B when the pad 1 was mounted was reduced to 52.0 dBμV.
Therefore, these measured values A and B were calculated by the following equation to determine the electromagnetic wave suppression effect. Electromagnetic wave suppression effect = (1-10 ^{(BA) / 20} ) × 100 From this calculation result, it was confirmed that 59.7% was obtained as the electromagnetic wave suppression effect.

Also for the pad 1 of the second embodiment, the same radio wave measurement test and calculation as in the first embodiment were performed using the same wireless telephone 5 and the same electromagnetic wave measuring device as described above. However, a sheet containing “Soldion” was used as the magnetic shield sheet 13 of the second embodiment.

In the second embodiment, since the upper pad body 20 and the lower pad body 22 are provided,
The measurement points were two upper and lower locations. The upper measurement point was the center of the operation panel unit 25 of the wireless telephone 5, and the lower measurement point was the sound hole 9 of the transmission unit 21. The electromagnetic wave measurement results and the electromagnetic wave suppression effect are as shown in the following table.

[0049]

[Table 1]

[0050]

As described in the foregoing, according to the pad of the present invention, have a function of shielding electromagnetic waves having a predetermined frequency emerging from the radio telephone set, moreover after having so as to be have an impact absorbing function, Unlike conventional covers, cases, and the like, common use is possible for various types of wireless telephones, and various problems in production and distribution, problems on the purchaser side, and the like can be solved.

When an adhesive material that can be repeatedly adhered is used, it can be easily attached to and detached from the wireless telephone, so that pads of various colors can be attached according to the mood of the day, and it is easy to change pads. Can respond to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a pad according to the present invention.

FIG. 2 is a perspective view illustrating a manufacturing process of the pad of the first embodiment.

FIG. 3 is a side sectional view showing a use state of the pad of the first embodiment.

FIG. 4 is a graph showing an electromagnetic wave shielding effect of the pad of the first embodiment.

FIG. 5 is a perspective view showing a second embodiment of the pad according to the present invention.

FIG. 6 is a perspective view illustrating a manufacturing process of the pad of the second embodiment.

FIG. 7 is a side sectional view schematically showing a state immediately before final high-frequency welding is performed in a process of manufacturing the pad of the second embodiment.

FIG. 8 is a schematic side sectional view showing a third embodiment.

FIG. 9 is a schematic side sectional view showing a fourth embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 pad 2 pad body 3 sticking member 5 wireless telephone 6 earpiece 9 sound hole 12 exterior material 13 magnetic shield sheet 15 elastic layer 17 opening 18 sticking sheet 20 upper pad body 22 lower pad body 25 operation panel section 26 operation surface cover Unit 30 operation keys 31 key hole 35 decoration processing unit 36 lamination processing unit 37 material sheet

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-220851 (JP, A) JP-A-5-130190 (JP, A) JP-A-7-273851 (JP, A) JP-A-4- 96427 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) H04M 1/02-1/23 H04Q 7/32

Claims (7)

(57) [Claims] An adhesive member (3) is provided on a back surface of a pad body (2) having an electromagnetic wave shielding property so as to enable attachment to a surface of a wireless telephone (5) , and said pad body (2) is provided. Is the front side of the magnetic shield sheet (13).
Covered with an exterior material (12) having an elastic layer (15).
Pad retrofit radio telephone, characterized in that that. 2. The retrofit pad according to claim 1, wherein the pad body (2) is formed in a size corresponding to the earpiece (6) of the wireless telephone (5). . 3. An upper pad body (2), wherein said pad body (2) corresponds to a receiver (6) of a wireless telephone (5).
0) and the lower pad body (2) corresponding to the transmitting section (21).
And (2) are formed separately.
A retrofit pad for a wireless telephone according to claim 1. 4. The pad body (2) includes a magnetic shield sheet (13) in which an electromagnetic wave shielding material is dispersed and held in a planar shape, and an exterior material (12) provided on the front side of the magnetic shield sheet (13).
The exterior material (12) has an opening (1) corresponding to a sound hole (9) provided in the wireless telephone (5).
The retrofit pad according to any one of claims 1 to 3, wherein (7) is provided. 5. A pad provided on a back surface of the pad body (2).
Adhesive that can be repeatedly bonded to the adhesive member (3)
5. The method according to claim 1, wherein the first and second elements are used.
The retrofit pad of the wireless telephone according to any one of the above. 6. The wireless communication device according to claim 1, wherein :
Extension toward the operation panel (25) of the telephone (5)
An operation surface cover portion (26) is provided;
(26) is an operation panel provided on the operation panel section (25).
A key hole (31) corresponding to the operation key (30) is formed.
The retrofit pad of a wireless telephone according to any one of claims 3 to 6 , wherein: 7. Laminating a decoration processing section (35) on the surface
Material sheet for exterior material (12) provided with processing section (36)
(37) against the sound hole (9) of the wireless telephone (5).
Armor material by forming corresponding openings (17)
(12), and an opening in the exterior material (12)
On the back side of (17), it has excellent sound-passing characteristics as well as electromagnetic wave shielding characteristics
Placed magnetic shield sheet (13) and adhesive sheet (18)
Then, the whole is punched into a predetermined shape by high-frequency welding.
A radio telephone characterized by fixing a punching profile at the same time.
Method of manufacturing retrofit pads for the machine.